Improvement



1'. H. comes. Th'ill-Coupling Jack. No.161,387. Patented Mar in-10,1875,

THE GRAPHIC C0: PHOT0rLlTH.39&41 PARK PLACEJLY.

liivrrnn S'rATEs PATENT @FFICE.

JOHN H. COMES, OF STAMFORD, CONNECTICUT.

IMPROVEMENT IN THILL=COUPLING JACKS.

Specification forming part of Letters Patent N 0. 161,387, dated March30, 1875; application filed September 9, 1874.

To all whom it may concern Be it known that 1, JOHN H. OoMBs, ofStamford, Fairfield county, Connecticut, have invented an ImprovedShackle Jack for Wagons; and I do hereby declare the followin g to be afull and correct description of the same, reference being had to theaccompanying drawings, in which- Figure 1 is a sectional view of myshacklejack, and Fig. 2 a perspective view of the same.

My invention relates to a tool for forcing the shaft-eyes of the shaftsof a wagon against their rubber buffers, so that the shackle-bolt can beeasily inserted and it consists in providing the shank of the jaw of thejack or clamp which clasps the axle with an adjustable and removablefork, made adjustable by a ratchet-head sliding in ways and operated bya pinion.

In the drawings, A is the jaw, which is intended to clamp the axle ofthe wagon, and is provided with a notched end and a crook for thatpurpose. B is the shank, bifurcated, with a groove in each inner sidefor the reception of splines upon either side of the sliding head 0.Upon the upper side of the head 0 are cogs or teeth, forming a rack,which engage a pinion, D, hung in suitable bearings, which pinion isoperated by a lever, E, or otherwise. Upon the lower side of the slidinghead 0 is a spur, L, upon which is fitted the shank K of a fork, H,which is made to fit the shoulders of a shaft-eye.

It is plain that when the jaw A is placed against the rear side of theclip upon the axle of a wagon, and the fork H placed against theshoulders of a shaft-eye, and a rubber buffer placed behind the eye andin the shackle, that, by revolving the pinion D in the proper direction,the eye can be forced against its buffer until the holes in the eye andin the shackle coincide, and the bolt be inserted without anydifficulty.

The shank K is made removable from the spur'L, so that forks ofdifferent sizes may be employed.

Having fully described my shackle -jack, what I claim, and desire tosecure by Letters Patent, is-

A shackle-jack consisting of the hooked jaw A and the removable slidingjaw H, to be operated by a rack and pinion, substantially as and for thepurpose set forth.

The above specification of my said invention signed and witnessed atStamford this 15th day of July, A. D. 1874.

J. H. COMES.

Witnesses: I

BYRON W. COHEN, HENRY N. WEED.

